head to head
Myst V: End of AgesvsScribblenauts Unlimited
Myst V: End of Ages leans Optimization (Pure Optimization); Scribblenauts Unlimited leans Optimization (Pure Optimization).
Myst V: End of AgesScribblenauts Unlimited
Axis by axis
Execution1 vs 1
Even - both lean on execution about the same.
Reads1 vs 0
Myst V: End of Ages leans harder on reads: no adversarial opponent, solo puzzle adventure
Variance1 vs 1
Even - both lean on variance about the same.
Optimization5 vs 6
Scribblenauts Unlimited leans harder on optimization: Finding objects that satisfy puzzle constraints is creative problem-solving
Two games can score the same on an axis and still test it in very different ways - read each rationale, not just the number.

